The kid who covered every notebook in drawings is still in there. Adults just stopped handing them crayons.

What changed was the supply, not the appetite. Children get materials handed to them and nobody asks what the drawing is for, and then at some point both the materials and the permission quietly stop arriving. The wanting usually survives that, waiting somewhere underneath a reasonable adult schedule.

Buy the cheap supplies and leave them where you can see them. Nobody is going to hand them to you now, which means the only missing step is you putting them within reach.